Description
Standards
International : IEC 60332-1-2; IEC 60684-2; IEC 60754-1; IEC 60754-2; IEC 61034-2National : ASTM B 231; ICEA S-93-639; UL 1072; UL 2556
Description
Application
Power distribution in medium voltage. As transformer feeders in substations. In power plants, industrial and operation installations, in residential areas and mining installations, in dry or wet locations.
Construction
1. Conductor: Compact stranded aluminium 1350, class B.
2. Inner semi-conductor: Extruded.
3. Insulation: Cross linked polyethylene XLPE-TR (Tree retardant).
4. External semi-conductor: Extruded strippable.
These last three components extruded CV (continuous vulcanization) triple extrusion in dry cure process.
5. Screen: Copper wires.
6. Tape: Polyester.
7 Outer sheath: Low Lineal density polyethylene LLDPE-UV with Anti-rodent compound
Main characteristics
Excellent properties against heat aging. To 133% for insulation level. The outer sheath has the following characteristics: low emission dense smoke and halogen free. Resistance to abrasion, moisture and sunlight. Adequate resistance to greases and oils. Flame retardant. Resistance to attack by rodents
Cross Section:
From 150 mm2 up to 630mm2.
Marking:
INDECO S.A. NA2XS2Y 35 kV 133% I.L. - Section - PH(Section) - Year - Sequential length.
Packing:
Non returnable wooden reels.
Colour:
Insulation: Natural.
Outer sheath: Black.
International standards
ASTM B231: Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors.
UL 1072: Standard for Medium-Voltage Power Cables.
ICEA S-93-639: 5-46 kV shielded power cable for use in the transmission and distribution of electric energy. Oil immersion test.
IEC 60332-1-2: Test for vertical flame propagation for a single insulated wire or cable - Procedure for 1 kW pre-mixed flame.
UL 2556: Wire and Cable Test Methods. strong>Section 9.3: FT1 (Vertical-Specimen) Flame Test.
IEC 60684-2: Flexible insulating sleeving - Part 2: Methods of test.
IEC 60754: Test on gases evolved during combustion of materials from cables. Part 1: Determination of the halogen acid gas content.
IEC 60754: Test on gases evolved during combustion of materials from cables. Part 2: Determination of acidity (by pH measurement) and conductivity.
IEC 61034-2: Measurement of smoke density of cables burning under defined conditions.
ICEA S-93-639: 5-46 kV Shielded Power Cable for Use in the Transmission and Distribution of Electric Energy. Section 9.4.2: Oil Immersion Test.
UL 2556:Wire and Cable Test Methods. Section 4.2.8.5:Carbon-Arc and Xenon-Arc Tests- Sunlight resistance.
Characteristics
| Construction characteristics | |
|---|---|
| Conductor material | aluminum Alloy 1350 |
| Material of the inner semi-conductor | Extruded |
| Insulating material | XLPE-TR |
| Material of the external semi-conductor | Extruded strippable |
| Screen | Copper wires |
| Outer sheath | Anti-rodent LLDPE |
| Sheath colour | Black |
| Halogen free | IEC 60754-1 |
| Lead free | Yes |
| Dimensional characteristics | |
| Conductor cross-section | 240mm² |
| Screen section | 16mm² |
| Conductor diameter | 18.0mm |
| Diameter over insulation | 39.98mm |
| Diameter over screen | 43.3mm |
| Diameter over Sheath | 48.8mm |
| Total number of wires | 37 |
| Approximate weight | 2195kg/km |
| Electrical characteristics | |
| Insulation Level | 133% |
| Operating voltage | 35kV |
| Dielectric strength core to screen DC, min. | 84.0kV |
| Time of application Dielectric strength core to screen DC | 5min. |
| Voltage for partial discharge test | 84.0kV |
| Maximal partial discharge test | 5pC |
| Max. DC resistance of the conductor at 20°C | 0.125Ohm/km |
| Phase reactance 60 Hz - trefoil formation | 0.1463Ohm/km |
| A.C. Conductor resist. at 90 °C - flat formation | 0.1611Ohm/km |
| A.C. Conductor resist. at 90 °C - trefoil formation | 0.1614Ohm/km |
| Phase reactance 60 Hz - flat formation | 0.216Ohm/km |
| Resistance of the screen | 1.15Ohm/km |
| Perm. current rating buried 20°C - trefoil formation | 367A |
| Perm. current rating buried 20°C - flat formation | 373A |
| Perm. current rating in air 30°C - trefoil formation | 502A |
| Perm. current rating in air 30°C - flat formation | 593A |
| Permissible short circuit current screen 0.5s | 2.9kA |
| Usage characteristics | |
| U.V resistance | UL 2556 - Sunlight Resistance |
| Oil resistance | ICEA S-93-639 |
| Gases toxicity | Low toxicity to IEC 60684-2 |
| Gases corrosivity | IEC 60754-2 |
| Smoke density | IEC 61034-2 |
| Flame retardant | IEC 60332-1-2; FT1 |
| Rodent protection | ARS (Anti rodent sheath) |
| Maximum operating temperature | 90°C |
| Overload maximum core temperature | 130°C |
| Short-circuit max. conductor temperature | 230°C |
Docs and info
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BENDING RADIUS INSTALLED IN M.V
R=Dxf
R: Bending radius when installed (mm)
D: Diameter over sheath (mm)
f: Multiplicative factor; given the following table:
-
Calculation of Current Condition Single-core M.V.
CALCULATION OF CURRENT CONDITION BASED ON NTP-IEC 60502-2 Annex B
Maximum conductor temperature: 90°C.
Ambient air temperature : 30°C.
Ground temperature : 20°C.
Depth of laying : 0,8 m.
Thermal resistivity of soil : 1,5 K.m/W.
Screens bonded at both ends.
